Bed-motion for cylinder printing-machines



(No Model.) 3 Sheets-Sheet '1 W. SOOTI. BBD MOTION FOR CYLINDER PRINTING MACHINES.

Patented June 30, 1896.

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3 Sheets-Sheet 2.

(No Model.)

W. SCOTT. BED MTION FOR CYLINDER PRINTING MACHINES.

Patentsd June 30, 1896.

@Q3/Wmo@ AZ? 67%/ ma KZ UNITED STATES PATENT OEmcE.

VALTER SCOTT, OF PLAINFIELD, NET JERSEY.

BED-MOTION FOR CYLINDER PRINTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 562,923, dated J' une 30, 1896.

Application filed June 18, 1894. Serial It. 514,865. (No model.)

fo @ZZ whom t may concern.

Be it known that l, WALTER SCOTT, a citizen of the United States, and a resident of Plainfield, in the county of Union and State of New Jersey, have invented certain neuT and useful Improvements in Bed-Motions for Cylinder Printing-viachinea of which the following is a specification.

This invention relates, primarily, to means for giving a reciprocatory motion to the beds of cylinder printing machines, but it is equally applicable in other classes of machinery wherein there is employed a reciprocating member, as planers, &c. There are several classes of such printing-machines, the invention being applicable to all of them. One of these classes includes cylinders which revolve continuously, being lifted during the return or non-printing stroke of the bed, or having a depressed part which is opposite the bed durin g such stroke. A second class of these machines includes a cylinder which is at rest during the ret urn stroke of the bed, but which moves in unison with the bed during the forward or printing stroke thereof, and which is either lifted during such return stroke orhas a fiat or depressed portion to come opposite the same during the return stroke. In another class there is an oscillating impression-cylinder, commonly driven by a rack on the bed, which takes impressions in several ways, as during one stroke only of the bed, being lifted during the other stroke, or it may take impressions during both strokes. There is another class of such machines wherein a number of impression-cylinders coact with one bed in a variety of Ways, but as these are wellknown to makers and users of this class of machines it is not necessary to here specify them. The aim ofthe maker in all these cases is to obtain and maintain an exact equality of speed of the printing and impression surfaces during the printing and a quick reversal of the motion of the bed, with smoothness of motion of all parts. Such is the end of this invention.

This invention includes combinations of devices hereinafter described, and more particularly pointed out in the claims concluding this specification.

The preferred form of the invention is shown in the accompanying drawings, forming part of this specification, in which* Figure 1 is a sectional plan view taken below the bed throughr the air-cylinders and showing the pistons therefor, the rack, part of the driving mechanism for the same, and part of the mechanism for operating the rack, and the mechanism for ad justin g the air-check devices to vary the pressures. Fig. 2 is a sectional side elevation on the planes indicated by the line 2 2 in Fig. 3, the view being takenin the direction of the arrows, showing the driving mechanism for the bed and the mechanism for operating the rack. Fig. 3 is a sectional end view taken on the line 3 3 in Fig. 2 in the direction of the arrows, showing the mechanisms above named. Fig. 4 is a sectional side elevation, on the line -1 4 in Fig. 3, of a mechanism for completing, stopping, and reversing the motion of the bed after it passes from the control of the driver-gears.

Referring to the drawings, the reference A marks a suitable framework, in which the moving parts of the machine are mounted; the reference B marks the channels or guides upon which the bed moves; the reference T marks the bed, and O an impression-cylinder. Journaled in the framework A are the shafts 2 and 3, upon which are mounted driver-gears 4 and 5, shown as being one above another in a vertical plane and as being connected by au intermediate gear 6 of lesser Width, which intermediate gear is upon the shaft 7, also journaled in the framework. The impression-cylinder C is shown as being connected with the shaft 2 by means of a train of gearing S. The power is applied in any suitable place, as to the shaft The frame 9, secured to the bed, forms the support for the rack 10, which is pivoted by means of the arms 11 to the said frame, as at 12, and is given an up-and-down motion by means of the rock-shaft 13, the eccentrics 14 thereon, and the eccentric-straps l5, which are pivotally connected to the arms 11, one at each end of the rack. The motion of the rack is limited by suitable stops a. The rock-shaft 13 is j ournaled in the frame 9 and is provided with a gear 16, which coacts with the gearsegment 17. This segment 17 is carried by the rock-shaft 18, journaled in alug 19, pro- IOO jecting downward from the bed. vThe shaft 18 is provided with an arm 26, having an antifriction-roller b, which coacts periodically with the pivoted slot-bars or camsY 21 22 on the framework, and so operates the shaft 13, segment 17, and gear 16 on shaft 13 to move the rack-bar up and down, the slotbars being moved while the friction-roller b on arm 2O is within the slot. operated by Ymeans of their shafts 23 24, cranks 25 26, links 27 28, elbow-lever 29,'and cam 30. This cam is shown as a closed cam and is borne by the shaft 31, journaled in the framework A, and is driven from the shaft '7 herenbefore named by the train of gearing 32, being so timed that the lever 29 andthe parts operated thereby are moved from one extreme of their motion to the other while the bed yis completing,,stopping,'and `reversing its motion, as hereinafter set forth.

For completing,stopping, and reversing the motion Vof the bed anysuitable device known or commonly used for that purpose may be usedfin connection with the driving mechanism hereinbefore described, and one such mechanism is herein shown, which consists of a mutilated rack 33 upon the bed, the rolling VYgear 34, the fixed rack 35, the slide-bar 36,

which carriesthe said rolling gear, the crankpin 37 on the shaft 38, engaging a slot 39 in Vthe said bar 36, and the gearing 40, connecting the shaft 33V with the shaft 3 hereinbeforeY named.

Taking theY parts in the positions in which they are shown in the drawings, they are moving in the direction indicated bythe arrows thereon. The bed is approaching the limit of its motion to the right in Fig. 2. The antifriction-roller b of the arm 20 has just entered the slot-bar 21. The rack 10 is about to roll out of mesh with the driver-gear 5. The rolling gear 34 has just meshed with the lefthand portion of the mutilated rack 33. During the further motion of the parts the rolling-gear 34 drives the bed to the right in Fig. 2 until the crank-pin 37 begins to move upward and to the left in Fig. 4, while at the same time the cam 30 operates the slot-bar 21 to raise the arm 20, rocks the shaft 13, and lifts the rack-bar 10 from the position in which it engages the driver-gear 5 into the position in Which it engages the gear 4. As the pin 37 moves upward and to the left (see Fig. 4) the bed is started in the reverse direction, the rack 10 rolls into mesh with the gear 4, and the gear 34 rolls out of mesh with the mutilated rack. The slot-bars 2l and 22 move upward or downward simultaneously, as the case may be, during the time the bed reverses its motion at each end, and operate the arm 20 and other parts. As the bed approaches the limit of its motion to the left in Fig. 2 the antifriction-roller l) on arm 2O enters the slot of bar 22 and the rolling gear 34 meshes with the right-hand end of the mutilated rack 33. During the reversal of the motion of the bed at the left (which is similar to that at the These slotbars 21 22 arel vgears 56 57.

right) the slot-bar 22 moves the arm 2O downward and the pin 37 Ymoves from its extreme upper positionY to the left and downward in Fig. 4 to complete, stop, and reverse the mction of the bed.

The gears 4 and 5 may be of the same or unequal sizes, so that the motion of the bed may be uniform in each direction, or it may be Yfaster in one direction than in the other. Changes may be made in other parts; also. more than one arm 20 may be employed and one cam or slot-bar for coaction therewith, Vas in my prior application, filed February 2T. 1894,'Serial No. 501,696.

This invention also includes an improvement in air-checking devices for reciproca-ting beds, one form of which will now be described. Pairs of air-cylinders41 42 are fast upon the bed, and 'pairs of pistons 43 44 on Vthe framework coact therewith in checking the bed. YThe pistons are moved by rods 45 46, to which they are fast, and are supported by rods or pipes 67. The rods 45 46 are screw-threaded at the ends where they pass through the framework and engage with the internal threads of the swiveled sleeves 47 4S. Y

These sleeves are turned in any suitable manner to move the rods and pistons in either direction, as by the worm-gearing 49 at the right or the spur-gearing 50 at the left in Fig. 1. The worms of the gearing 49 are borne by the shaftV 51, which extends transversely of the framework and which is driven by means of the bevel-gearing 52Y from the shaft 53, journaled longitudinally of the framework.

The shaft 54, extending from the side of the framework and provided with a crank 55, connects with the shaft 53 by means of the beveled The gear 57 is or maybe splined upon its shaft 53 and may be moved thereon by means of the eccentric-pin 5S on the shaft 59, which is provided with a handle 60 for turningit. When gears 56 and 57 are in mesh, the positions of the pistons 43 may be varied by turning the crank 55. In like manner the positions of the pistons 44 may be varied by operating the gearing 50, which is connected with the bevel-gears 56 above named by means of the shaft 61, the gear 57 thereon, gears 62, bevel-gearing 63, shaft 64, shaft 65, and gear 66. The gear 57 upon the shaft 61 is splined thereon and may be moved by means of the arm 60 and connections, as above described. By this construction both of shafts 53 and 61 may be operated simultaneously or either may be disconnected at will from the gear 56 and the pistons operated thereby be left unmoved. while the others are adj usted to vary the aircheck for the corresponding end of the machine.

For the purpose of equalizing the pressure in the pairs of air-cylinders, and so securing evenness of motion, it is preferred to connect said pairs by means of a suitable air-duct or connection. One means for so connecting these parts is shown in the drawings, wherein the bent pipes 67 are fixed in the framework,

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one at each end of the machine, the ends of each pipe passing loosely through and supporting the pistons 43 and iii and being opencnded. Any inequality of pressure in the aircylinders is at once equalized by means of the air-duct or connection. This construction permits of the adjustment of the pistons without a corresponding motion of the air-pipes or cqualizers.

Many changes may be made in details of this invention without departing from the spirit thereof.

Having thus fully described my invention, what l claim as new, and desire Letters Patent for, is-

l. The combination of a reciprocatory bed or member, a rack thereon movable relatively th.ereto,two driver-gearsin one plane with and coacting with said rack alternately to move the bed throughout the greater extent of its motion in each direction, and means for completing, stopping and reversing said motion of said bed, substantially as described.

2. The combination of a reciprocatory bed or member, two driver-gears in one plane, a rack on said bed and movable relatively thereto, a rock-shaft on said bed, connections from said shaft to said rack, means for operating said shaft to cause said rack to coact alternately with said drivers to move the bed throughout the greater extent of its motion in each direction, and means for completing, stopping and reversing said motion, substantially as described.

3. The combination of a reciprocatory bed or member, a movable rack thereon, a rockshaft and connections on said bed for moving said rack, an arm connected with said shaft for operating it, means on the framework for operating said arm, two driver-gears alternately operating to move said bed throughout the greater extent of its motion in each direction, and means for completing, stopping and reversing said motion, substantially as described.

et. The combination of a reciprocatorybed or member, a movable rack thereon, a rockshaft and connections on said bed for moving said rack, an arm connected with said shaft, slot-bar mechanism on the framework for operating said arm and shaft, two drivergears alternately operating to move said bed throughout the greater extent of its motion in each direction, and means for completing, stopping and reversing said motion, substantially as described.

5. The combination of a reciprocatory bed or member, a rack pivotally attached thereto, a rock-shaf t and connections thereon for moving said rack, slot -bar mechanism on the framework and connections for moving said shaft, two driver-gears alternately engaging said rack to operate said bed throughout the greater extent of its motion in each direction, and means for completing, stopping and reversing said motion, substantially as described.

G. The combination of a reciprocatory bed or member, pairs of air-cylinders, pistons for said cylinders, and air connections between and through pairs of pistons, whereby the pressures in the pairs of air-cylinders are equalized, substantially as described.

7 The combination of a reciprocator f bed, air-cylinders, pistons therefor, and means for simultaneously moving the members of the air-check which are on the framework at each end thereof to vary the checking function, and means for disconnecting atwill the mechanism for moving said members at either end of the frame, substantially as described.

8. The combination of a reciprocatory bed, pairs of air-cylinders, pairsof pistons therefor, the members of the air-check which are on the framework being adjustable to var the air-check, and xed air connections between the pairs on the framework, whereby the pressures are equalized, substantially as described.

9. The combination of a reciprocatory bed, air-cylinders, pistons therefor, the members of the air-check which,V are on the framework being adjustable, a crank on the framework, and connections having disconnectible parts whereby said crank may simultaneouslymove the said adjustable members or either theremachine, with a support for and carrying each member of the latter pair, and gearing for simultaneously moving said rods to adjust the positions of the members carried thereby and vary the checking action, substantially as described.

1l. The combination of a recprocatory bed, an air-check for coaction therewith at one end of the framework, a support on the framework carrying the last-named member, two screwthreaded rods for moving said second member, swiveled screw-threaded sleeves engaging said rods, and gearing for operating said sleeves, whereby the checking may be varied, substantially as described.

12. The combination of a reciprocating bed, a pair of air-check members at one end thereof, and a pair of coacting members at one end of the framework for checking the motion of the bed, with supports for said second members, two screw-rods for operating each air-check member last named, swiveled screw-threaded sleeves engaging said rods, and gearing for operating said sleeves, whereby the air-check may be varied, substantially as described.

13. The combination of areciprocatingbed, an air-check member thereon, a coacting aircheck member at one end of the frame, a support for said second member, two screw-rods for operating the air-check member last named, swiveled screw-threaded sleeves engaging said rods, gear-wheels rigid with said sleeves, and mechanism for operating said IOO IIO

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ports and so vary the ai r-check, substantially as described.

15. The combination of a reciprocating bed, an air-check member thereon, an air-check member at one end of the frame for coaction therewith, a support for said second member, two screw-rods for operating the air-check member on the support, swiveled 'screw-,

threaded sleeves engagingsaid rods, wormgears on said sleeves, worms for turningsaid gears, and mechanism for operating the worms, whereby the air-check may be varied, substantially as described.

16. The combination of a reciprocating bed, a pair of air-check members thereon at one end thereof, and a pair of air-check members at one end of the frame for coaction therewith,with supports for said second pair, screwrods carrying the latter members, and gearing for simultaneously moving said rods to vary the air-check, substantially as described.

17. The combination of areciprocating bed, a pair of air-check members at one end thereof, a pair of coacting air-check members supported at one end of the frame, rods for moving the last-named pair, gear-Wheels and connections for moving said rods, a transverse shaft on the frame having means for operating said wheels and means for operating said shaft, substantially as described.

1S. The combination of a reciprocatingbed, a pair of air-check members at each end thereof, a pair of coacting air-check members supported at each end of the frame, rods for opend of the frame, rods for operating the lat-' ter members, gear-wheels and connections for moving said rods, a transverse shaft or rod at each end of the frame, and means for simultaneously operating said shafts and having disconnectible parts whereby either shaft may be operated Without operating the other, substantially as described.

20. The combination of a reciprocating bed, an air-check member at each end thereof, a coacting air-check member supported at each end of the frame, rods for operating the latter members, worm-Wheels and connections for moving said rods, a transverse shaft at each end of the frame, having worms for operating said worm-Wheels, and means for simultaneously operating said shafts, substantially as described.

2l. The'combination of a reciprocating bed, an air-check member at each end thereof, a coacting air-check member supported at each end'of the frame, lrods for operating the latter members, Vworm-gears and connections for moving said rods, a transverse shaft or rod at each end of the frame, having worms for operating said worm-gears, and means for simultaneously operating the said shafts and having disconnectible parts whereby either shaft may be operated without operating the other, substantially as described.

Signed at New York, in the county of New York and State of New York, this 26th day of May, A. D. 1894.

VALTER SCOTT.

lVitnesses:

JAMES J. GRADY, R. W. BARKLEY. 

